I lost network after I changed display

[dpbuli]

I changed the display and i completed it es it goes but now problem is thet i lost network, I can not find no network,
does somebody knows what it can be?

 

[bab2010]

Perhaps, something got disconnected inside the device? have you reopened the device and double check it again? Well i wouldn't do that by myself, instead i will take it to the apple store for a proper fixing.